EP 2376942 B1 20130327 - TEMPERATURE COMPENSATION CIRCUIT FOR SILICON PHOTOMULTIPLIERS AND OTHER SINGLE PHOTON COUNTERS
Title (en)
TEMPERATURE COMPENSATION CIRCUIT FOR SILICON PHOTOMULTIPLIERS AND OTHER SINGLE PHOTON COUNTERS
Title (de)
TEMPERATURKOMPENSATIONSSCHALTUNG FÜR SILIZIUM-FOTOVERVIELFACHER UND ANDERE EINZELPHOTONENZÄHLER
Title (fr)
CIRCUIT DE COMPENSATION DE TEMPÉRATURE POUR DES PHOTOMULTIPLICATEURS ÉLECTRONIQUES ET AUTRES COMPTEURS MONOPHOTONIQUES
Publication
Application
Priority
- IB 2009055186 W 20091119
- US 12247608 P 20081215
Abstract (en)
[origin: WO2010070487A2] A PET scanner (8) includes a ring of detector modules (10) encircling an imaging region (12). Each of the detector modules includes at least one detector pixel (24,34). Each detector pixel includes a scintillator (20, 30) optically coupled to one or more sensor APDs (54) that are biased in a breakdown region in a Geiger mode. The sensor APDs output a pulse in response to the light from the scintillator corresponding to a single incident radiation photon. A reference APD (26, 36) also biased in a breakdown region in a Geiger mode is optically shielded from light and outputs a temperature dependent signal. At least one temperature compensation circuit (40) adjusts a bias voltage applied to the sensor APDs based on the temperature dependent signal.
IPC 8 full level
CPC (source: EP US)
G01T 1/20182 (2020.05 - EP US); G01T 1/20184 (2020.05 - EP US); G01T 1/2985 (2013.01 - EP US); A61B 6/037 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010070487 A2 20100624; WO 2010070487 A3 20110526; CN 102246058 A 20111116; CN 102246058 B 20140611; EP 2376942 A2 20111019; EP 2376942 B1 20130327; US 2011248175 A1 20111013; US 8476594 B2 20130702
DOCDB simple family (application)
IB 2009055186 W 20091119; CN 200980150192 A 20091119; EP 09774743 A 20091119; US 200913139307 A 20091119